Robbe Concorde.
Twin speed-400 foamie.
Built 2004, flown 2006-7.
1992-96 British Airways livery. On the tail, a stylized Union flag.
Along the fuselage, a simplified "Speedbird" flourish.
The nose doesn't droop (instead it flips up just forward of the spar
on a botched landing, easily repaired).
80 cm span. About 32 oz, depending on battery.
3s lipo, twin speed-400 direct drive Gunther spoon props.
At 25 A full throttle, silly vertical climbs are possible.
Covered with Oracover-Lite heat-shrink film.
2 oz of lead in the nose compensates for that weight.
Four-servo modification lets elevator help ailerons and vice versa,
and allows differential aileron to reduce adverse yaw.
It also allows "crow" braking, which isn't strictly necessary since
a delta wing can flare mightily and keep control. Still, landings
are more realistic when the nose stays below 20 degrees.
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